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DAQmx_CreatePulseChannelFreq
Creates a task and channel to generate pulse.
Syntax
void avl::DAQmx_CreatePulseChannelFreq ( DAQmx_CreatePulseChannelFreqState& ioState, atl::Optional<const atl::String&> inDeviceID, atl::Optional<const atl::String&> inCounter, avl::DAQmxIdleState::Type inIdleState, float inInitDelay, float inFrequency, float inDutyCycle, avl::DAQmxTaskID& outTaskID )
Parameters
| Name | Type | Default | Description | |
|---|---|---|---|---|
| ioState | DAQmx_CreatePulseChannelFreqState& | Object used to maintain state of the function. | ||
 |
inDeviceID | Optional<const String&> | NIL | Device alias, product name or a serial number |
|
inCounter | Optional<const String&> | NIL | Name of a counter used to create virtual channel |
|
inIdleState | DAQmxIdleState::Type | Resting state of an output terminal | |
|
inInitDelay | float | Time (in seconds) to wait before generating pulse | |
|
inFrequency | float | Frequency of generated pulse | |
|
inDutyCycle | float | The width of the pulse divided by the pulse period | |
 |
outTaskID | DAQmxTaskID& | ID of a created task |
Remarks
Device driver software
This filter is intended to cooperate with digital I/O cards using its vendor driver software. To be able to connect to a card it is required to install NI-DAQmx driver software. Currently Adaptive Vision Studio requires NI-DAQmx version 9.5.
NI-DAQmx driver software can be downloaded from the following website: http://www.ni.com/dataacquisition/nidaqmx.htm.
Device identification
When there is only one device connected to computer, inDeviceID field can be set to Auto. In this situation first available device will be found and connected.
inDeviceID can be used to pick one of multiple devices connected to computer. Set this field to Device alias (for example "Dev1"), product name or serial number. This parameters should be available in Measurement & Automation Explorer.
